• The publisher needs to agree on the targeting and categories for an open auction deal
• Programmatic Guaranteed deals are available in the insertion order’s Inventory source targeting
• The publisher sets up line items in Display & Video 360 for any Programmatic Guaranteed deals
• The publisher needs to agree on number of impressions and fixed price for a Programmatic Guaranteed deal

The correct answer is: The publisher needs to agree on a number of impressions and fixed price for a Programmatic Guaranteed deal

Explanation: A preferred deal is an exclusive, advertiser-to-publisher relationship for programmatically purchasing inventory in brand-safe environments. Preferred deals provide advertisers with first-look access to custom, non-guaranteed inventory at a fixed CPM.

Read more here: https://support.google.com/displayvideo/answer/3289692